Structural strength analysis and optimum of suspension under typical working conditions

Takes Macpherson suspension as the research object, the establishment of the two degree of freedom vibration model analysis of frequency response function. Using solid model, analyzed its structural strength under three typical conditions of uneven pavement, braking and steering. Using the quasi-static simulation module in ADAMS/Car, calculated the suspension different conditions stress as the load to analysis the suspension by the finite element method. After the suspension optimization, the stiffness and the vibration performance is consistent on basic, the strength increased by 12.5%, but it is less than the allowable stress of the material. The quality of the Steering Knuckle was reduced by 4%, which ensures the strength and the material saving, the optimization of the suspension mass ratio increases, improved the vehicle comfort.